Rare SMB session to a remote host

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-07-16
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

2 Days

Required Data

  • Requires:
    • XDR Agent

Detection Modules

Detector Tags

NDR Lateral Movement Analytics

ATT&CK Tactic

Lateral Movement (TA0008)

ATT&CK Technique

Remote Services (T1021)

Severity

Low

Description

The endpoint performed a rare SMB activity to a remote host.

Attacker's Goals

Attackers may use the SMB protocol in an attempt to move laterally in the network, and expand their foothold in the organization.

Investigative actions

  • Check whether the username used in the SMB connection is legitimate.
  • Verify that this isn't IT activity.

Variations

Rare SMB session to a remote host

Synopsis

ATT&CK Tactic

Lateral Movement (TA0008)

ATT&CK Technique

Remote Services (T1021)

Severity

Informational

Description

The endpoint performed a rare SMB activity to a remote host.

Attacker's Goals

Attackers may use the SMB protocol in an attempt to move laterally in the network, and expand their foothold in the organization.

Investigative actions

  • Check whether the username used in the SMB connection is legitimate.
  • Verify that this isn't IT activity.